Counting Elements and Atoms Flashcard

Front

What is a compound?

Back

A compound is a substance formed when two or more different elements are chemically bonded together.

Front

Which of the following is a compound? Co, O2, C, CO2

Back

CO2 is a compound.

Front

What is glucose (C6H12O6) made of?

Back

Glucose is made up of two or more elements.

Front

What does the subscript in a chemical formula indicate?

Back

The subscript indicates how many atoms of an element are present in a molecule.

Front

How many different elements are in H2COCH2?

Back

There are 3 different elements in H2COCH2.

Front

How many Nitrogen atoms are in H2C3O4N5?

Back

There are 5 Nitrogen atoms in H2C3O4N5.

Front

What is the chemical formula for water?

Back

The chemical formula for water is H2O.

Front

What is the difference between an element and a compound?

Back

An element is a pure substance made of only one type of atom, while a compound is made of two or more different types of atoms.

Front

What does the term 'molecule' refer to?

Back

A molecule is a group of two or more atoms bonded together.

Front

What is the significance of chemical formulas?

Back

Chemical formulas provide information about the types and numbers of atoms in a compound.